Bella Hadid maybe pushing herself to the limits while attempting to stay at the top of the world of fashion.

As the 20-year-old model and her sister, Gigi Hadid, continue to be some of the world’s most notable models, a source claims Hadid may be putting her health at risk by failing to turn down any opportunities for work.

“Bella’s working days average 18-20 hours and she hardly gets any sleep,” a source told OK! Magazine on Tuesday. “She just won’t say no to a job, no matter how well feeling.”

As the outlet revealed, Hadid has spoken out numerous times about her struggles with Lyme disease and admitted that the illness has taken a toll on her body.

“I know what it feels like to not want to get out of bed from bone pains and exhaustion and days on end of not wanting to socialize or be around people because the anxiety and brain fog just isn’t worth it,” she once admitted.

According to OK! Magazine's source Hadid's mother, Yolanda Foster, who also struggles with the illness, is hoping to get through to Hadid and encourage her to slow down with the help of one of Hadid's closest friends, Kendall Jenner.

“Yolanda hates seeing her work like this when she’s got to deal with her health issues,” the insider explained, “Yolanda wants Kendall to get on board — if she’s a real friend to Bella, she should be worried to.”

In addition to Bella Hadid, Yolanda Foster's youngest child, son Anwar Hadid, is also suffering from Lyme disease.

To hear more about Bella Hadid's Lyme disease struggles, check out the video below.